Smell is interesting because it's way overrepresented genetically. Something like 5% of most animals' genomes are just a whole bunch of olfactory receptor genes, each for a different individual smell. So it should be unusually easy to do epigenetics with it. Just say "Express the gene for cherry smell more" and then the mice have a stronger reaction to it.
This doesn't mean that any more complex behaviors can be inherited epigenetically. In fact, it might be that nothing else is as suitable to epigenetic transmission as olfaction.
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Basically, I am in total agreement, although w.r.t.
Actually, I think human beings can't help being drawn to black and white thinking of one kind or another. Even while thinking this, an insidious something in my mind is trying to turn it into some kind of black and white thinking: There are two kinds of people in the world: people who think there are two kinds of people in the world, and people who don't.
So I suggest you have the causation backwards, and rather, the reason so many heated arguments fall into some dichotomy between two Schelling points (like "Change the World" <--> "Stop the catastrophe caused by the maniacs trying to change the world") is a tendency so central to our being that we can't ever expect to extinguish it -- we can only learn to be vigilant about it, laugh at ourselves (and others).
At bottom, I think it is something like an instinct for orienting oneself, like "my people" vs "those I'd better beware of", which to me seems right for hunter-gatherers, who are very likely to only know of two groups (or they can easily view it this way): the people I live my life with, cooperate with, who are mostly likely to defend me in some way, vs those other people who don't think, talk, or decorate their bodies in the proper way, who have neutral at best, and frequently hostile intentions towards me and my people.
Ask yourself (ozziegooen) whether it's happened to you to some extent. Was there, in the feelings that motivated you to post, an element of anticipation of the agreement of people you'd like to get to know better, and simultaneous head-shaking over all those silly people to whom "Change the world" seems meaningful? There certainly was for me while reading it.